Virtual DC Motor-Based Coordinated Control Strategy for Multi-Receiver Dynamic WPT System

Dynamic wireless power transfer (DWPT) is gaining traction in logistics for its continuous and flexible power delivery. However, multireceiver DWPT systems face significant challenges in ensuring current sharing and maintaining output voltage stability. This article proposes a solution for multireceiver DWPT systems using a virtual dc motor (VDCM)-based coordinated control strategy, effectively addressing these two critical issues. The proposed strategy integrates a droop control mechanism to achieve efficient current sharing among multiple receivers, while a VDCM control loop enhances output voltage stability. In addition, this article theoretically analyzes the system’s stability and dynamic performance and establishes a simulation model. Experimental results from a 1.2 kW prototype system show that the proposed strategy significantly reduces voltage fluctuation and current deviation, achieving an efficiency of 89.76%, with output current deviation under 5% and bus voltage fluctuation below 1%. This article provides an effective approach to improving the performance and stability of multireceiver DWPT systems in complex operating environments.